Mac: Maverick Python: 3.4

I tried to testtimeit module in Python's IDLE

import timeit

>>> timeit.timeit( "obj.method", """
    class SomeClass:
        def method(self):
            pass
    obj = SomeClass()
""")

When I tried to type def method(self): on the next line of class SomeClass, I hit Tab, it prompted a window showing the files inside my Document directory. So I hit Ctrl+Tab instead.

But I still got the error:

Traceback (most recent call last):
  File "<pyshell#26>", line 6, in <module>
    """)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/timeit.py", line 213, in timeit
    return Timer(stmt, setup, timer).timeit(number)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/timeit.py", line 122, in __init__
    code = compile(src, dummy_src_name, "exec")
  File "<timeit-src>", line 9
    _t0 = _timer()
             ^
IndentationError: unindent does not match any outer indentation level

Can someone explain:

1. how to fix it, and
2. how to avoid the prompt of My Document appear?

Thx!!!